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da0e9ce3 | 1 | //-------------------------------------------------------------------------- |
2 | // | |
3 | // Environment: | |
4 | // This software is part of the EvtGen package developed jointly | |
5 | // for the BaBar and CLEO collaborations. If you use all or part | |
6 | // of it, please give an appropriate acknowledgement. | |
7 | // | |
8 | // Copyright Information: See EvtGen/COPYRIGHT | |
9 | // Copyright (C) 2003 Caltech, UCSB | |
10 | // | |
11 | // Module: EvtbTosllAli.cc | |
12 | // | |
13 | // Description: Routine to implement b->sll decays according to Ali '02 et al. | |
14 | // | |
15 | // Modification history: | |
16 | // | |
17 | // Ryd March 30, 2003 Module created | |
18 | // | |
19 | //------------------------------------------------------------------------ | |
20 | // | |
21 | #include "EvtGenBase/EvtPatches.hh" | |
22 | #include <stdlib.h> | |
23 | #include "EvtGenBase/EvtParticle.hh" | |
24 | #include "EvtGenBase/EvtGenKine.hh" | |
25 | #include "EvtGenBase/EvtPDL.hh" | |
26 | #include "EvtGenBase/EvtReport.hh" | |
27 | #include "EvtGenModels/EvtbTosllAli.hh" | |
28 | #include "EvtGenModels/EvtbTosllAliFF.hh" | |
29 | #include "EvtGenModels/EvtbTosllAmp.hh" | |
30 | #include "EvtGenModels/EvtbTosllScalarAmp.hh" | |
31 | #include "EvtGenModels/EvtbTosllVectorAmp.hh" | |
32 | ||
33 | #include <string> | |
34 | using std::endl; | |
35 | ||
36 | EvtbTosllAli::~EvtbTosllAli() {} | |
37 | ||
38 | std::string EvtbTosllAli::getName(){ | |
39 | ||
40 | return "BTOSLLALI"; | |
41 | } | |
42 | ||
43 | ||
44 | EvtDecayBase* EvtbTosllAli::clone(){ | |
45 | ||
46 | return new EvtbTosllAli; | |
47 | ||
48 | } | |
49 | ||
50 | void EvtbTosllAli::decay( EvtParticle *p ){ | |
51 | ||
0ca57c2f | 52 | setWeight(p->initializePhaseSpace(getNDaug(),getDaugs(),false, |
53 | _poleSize,1,2)); | |
da0e9ce3 | 54 | |
55 | _calcamp->CalcAmp(p,_amp2,_aliffmodel); | |
56 | ||
57 | } | |
58 | ||
59 | ||
60 | void EvtbTosllAli::initProbMax(){ | |
61 | ||
62 | EvtId parnum,mesnum,l1num,l2num; | |
63 | ||
64 | parnum = getParentId(); | |
65 | mesnum = getDaug(0); | |
66 | l1num = getDaug(1); | |
67 | l2num = getDaug(2); | |
68 | ||
69 | //This routine sets the _poleSize. | |
70 | double mymaxprob = _calcamp->CalcMaxProb(parnum,mesnum, | |
71 | l1num,l2num, | |
72 | _aliffmodel,_poleSize); | |
73 | ||
74 | setProbMax(mymaxprob); | |
75 | ||
76 | } | |
77 | ||
78 | ||
79 | void EvtbTosllAli::init(){ | |
80 | ||
81 | checkNArg(0); | |
82 | checkNDaug(3); | |
83 | ||
84 | //We expect the parent to be a scalar | |
85 | //and the daughters to be X lepton+ lepton- | |
86 | ||
87 | checkSpinParent(EvtSpinType::SCALAR); | |
88 | ||
89 | EvtSpinType::spintype mesontype=EvtPDL::getSpinType(getDaug(0)); | |
90 | ||
91 | if ( !(mesontype == EvtSpinType::VECTOR|| | |
92 | mesontype == EvtSpinType::SCALAR)) { | |
93 | report(ERROR,"EvtGen") << "EvtbTosllAli generator expected " | |
94 | << " a SCALAR or VECTOR 1st daughter, found:"<< | |
95 | EvtPDL::name(getDaug(0)).c_str()<<endl; | |
96 | report(ERROR,"EvtGen") << "Will terminate execution!"<<endl; | |
97 | ::abort(); | |
98 | } | |
99 | ||
100 | checkSpinDaughter(1,EvtSpinType::DIRAC); | |
101 | checkSpinDaughter(2,EvtSpinType::DIRAC); | |
102 | ||
103 | _aliffmodel = new EvtbTosllAliFF(); | |
104 | if (mesontype == EvtSpinType::SCALAR){ | |
105 | _calcamp = new EvtbTosllScalarAmp(-0.313,4.344,-4.669); | |
106 | } | |
107 | if (mesontype == EvtSpinType::VECTOR){ | |
108 | _calcamp = new EvtbTosllVectorAmp(-0.313,4.344,-4.669); | |
109 | } | |
110 | ||
111 | } | |
112 | ||
113 | ||
114 | ||
115 | ||
116 |